Which engine to you have? If you can provide the following, I'll update your profile so it's always displayed.

• Year:​

• Engine: 1.8 TFSI, 2.0 TFSI, 2.0 TDI, 2.5 TFSI, 3.2 VR6​

• Engine Code*: CDAA, EA888, EA113, CEPA, BUB​

• Gear Box: DSG or Manual​

• Drive Train: FWD or Quattro​

• Model: Coupe or Roadster​

* Your engine code is really important since there are two very different 2.0 TFSI engines available. The code can be found on the VIN tag either in the boot/trunk or inside the front cover of the Owners Manual or Service Booklet.

Good read here. Be sure you follow the information provided so you are sure the values are correct -

https://www.ttforum.co.uk/threads/how-to-detecting-3-2-vr6-chain-stretch-with-vcds.1836951/

Note - I've updated your avatar profile info, thanks.

 

Hi - not usually so quick to engage but saw your questions, and once you've shared the car details - SJP above - I'm sure you'll get a load of helpful advice.

In the meantime, and if your engine is the same as mine (Gen 2 EA888) I'm happy to share anything useful from my own experience last year. My TT had done over 130,00 miles and still had the factory-fitted timing chain tensioner, so I was very keen to get the thing swapped out, and at the same time renew all the associated bits and pieces while the side of the engine was off.

Depending on your car, the tensioner can go at any time once the engine has 60,000 plus on the clock, and will ruin your engine, so you will most likely be right to get the work done ASAP.

I decided to do the work myself, bought all genuine Audi parts and researched the hell out of the full process. I replaced the following.

• Timing Chain tensioner
• Balance Shaft Chian tensioner
• Timing chain, balance shaft chain and oil pump chain
• All chain guides, bolts etc
• Crank Bolt
• Engine mount bolts
• Upper and lower timing covers, seals and bolts
• Cam Bridge seal
• Serpentine Belt
• Turbo seal
• I also put a new oil dip stick on and you'll be replacing the oil filter before re-filling the engine oil.

My view, whilst if you know what you're doing and can identify good quality after-market parts, is that for a critical job like the timing gear refurb, you should get the best components for peace of mind. This obviously depends on many things - your budget, how long you intend to keep the car, whether you want to do the job yourself etc, etc.

By the way, I managed to remove all the parts and replace them but asked a garage to put everything back together. If I had had somewhere under cover, rather than on my drive, I would have been able to complete it all myself, however, don't underestimate the amount of work involved - or the importance of getting it right!

I think I spent around £800 on genuine parts - then another £900 on the garage fee to re-assemble. Audi had quoted me for around 7 hrs labour to do the job, but I've seen a video where an american mechanic did the main part of the job in a very short space of time. I reccon the Audi route would have cost

If you decide to get a garage to do this for you, choose them carefully. Many wont take on this job, either because they're too busy with MOT repairs or because they dont have the experience to do this particular work.

Happy to share any other general advice form my own experience if it helps.

 

OP has an RS so it's an EA855 engine...

TBH I didn't even know this was that big a thing on the EA855... But then again there are a relative few of these out there, so perhaps that's why you don't hear about it as much as the 2.0Ts. These type of timing chains on modern engine designs, will certainly wear over time regardless; and, 100k miles is approaching the time most EA888s would have been done already or be in need of doing.

I can't really say what the "expected values" should be on the I5 engine but...

1. Does anyone know how many hours it should take to perform the service?

Unlike the EA888, the EA855 has its timing gear on the rear of the engine, so you'll have to pull the transmission to do this. Personally I'd probably reserve a...long...weekend for this lol. If we're talking about shop-labour hours...it's probably a good lot of them given the transmission R&R. Would be good to think of/do/have done any "while you're in there" stuff.

Here's a [sped-up] video on the process (French guys but almost no words spoken), I think this actually is an Mk2 TT-RS too:

2. Are the OEM parts acceptable or are there other manufacturer parts that are more robust?

I would not use anything but the most up to date OE parts. Doesn't have to be from VAG...typical OEs for these parts are INA, Iwis, etc.

3. Which parts should be replaced along with the chain(s)?

Tensioner, guides, bolts...I'm sure there's "full kits" out there for this. I'm pretty sure there are two chains and two tensioners involved. First chain goes from the crank up to another shaft which drives the HPFP, then another chain goes from there to the cams.

4. Are there additional parts that should be checked at this time and replaced as needed?

Not entirely sure what you'd need to look at/replace, or consider upgrading, but pretty much anything else that requires the trans out could be done here. RMS is one, off the top of my head. If you wanted to upgrade the clutch...there's another one. Etc.

 

My car is a 2013 TTRS. Since I’m in the US you can quickly deduce that I have the a 2.5L turbo CEPB engine and 6MT. All US RSs were Quattro coupes.

After searching a few websites I have a list of the minimum parts needed.

• 2 timing chains
• 4 slide rails
• 1 gasket
• 2 chain tensioners
• 2 screws for the camshafts

The price for a kit ranges from $830-$1217. The lower number is from bar-tek.com in the UK and parts are sourced from “Germany”. The higher number is from ECS Tuning and all parts are from Audi. If 8 hours of time is reasonable then labor at an Audi dealership will be at least $1,000. I need to check with my Indy ship to see if they are any better on the price and what parts they use. I will ask for all used parts back.

Stay tuned.

 

Hello,

For a proper work, the following parts are needed

07K109158C Timing chain (lower)

07K109469H Slide rail

07K109513D Slide rail

07K109467H Chain tensioner

07K109231A Timing chain (upper)

07K109510B Slide rail (chain tensioner)

07K109514D Slide rail

07K109217F Chain tensioner

07K109235A Seal (for chain tensioner)

07K103081 Oil strainer (mesh microfilter)

N91042802 Hexagon socket head bolt Audi A6L 4F "CN" (camshaft bolt)

06E109257P Control valve (N205 – timing oil control) (2 pcs)

07K121149 Seal ring (on upper timing cover)

07K109345 Gasket (on upper timing cover)

07K103483A Seal (valve cover)

06J103831 Decoupling element (valve cover bolt)

N90041102 O-Ring (lower time chain cover)

070109293B Seal ring (lower time chain cover)

059103051K Shaft oil seal size 85X105X8 (crankshaft seal on lower timing chain cover)

07K145215A Seal (vacuum pump)

New bolts for the flywheel and I personally suggest complete clutch kit

Please feel free to ask for more info, if needed!

John

 

I called my local Audi dealer today for an estimate for this service and they replied $5,000 and would take 2 days. I called a local Indy that specialized in euro high end cars and was quoted $8,000 and would take two days. I am really bummed.

 

It is a costly job indeed and of course needs time. Your car with MT can be done with the engine on the car. For a car with AT (like mine), the engine has to be removed as the gearbox cannot be removed as it is too close to the chassis.

 

I now have a complete list of the required parts. After checking various Audi dealer websites I can save 30% on the parts cost. This would be a savings of about $1,000.

 

Hi. I am looking at doing the same job to my CEPA RS soon, are you able to provide a list of all the part numbers for this job please and any advice if you have already done the work?

Thank you

 

Returned to the dealer today and the parts department agreed to give me the parts at the wholesale price which is about 20% off list. This way I can still get the Audi 12 months/12K miles warranty. The mechanics want to go over my car before giving me a hard quote. This service is very rare.

Stay tuned…….

 

I will post the list tomorrow.

 

Legend! Thanks

 

This is the list the shop sent me. I take my car in for repairs on the 21st. We will see if there will be more after I pick up the car.

 

07K109283F & 07K109224 are not needed. Only if the cover of the car is problematic and is needed for a specific reason and the second part only if there is wear on it.

 

06E109257P is not in Wormrider's list that Audi provided above? Seems a little unnecessary to replace these if they are functioning ok currently? Are they accessible to replace in situ should the need arise?

 

It is one of the most important part. Most mechanics do suggest them (do not know the reason). Due to the mileage and the age of the car should be replaced. As an electromechanical engineer, I mentioned that, they are electromechanical parts (electric controlled valves with moving parts inside) that control the oil flow to the cam adjusters controlling in that way the cams timing. Electric valves are also getting "tired" over the years and usage. It is up to you...

 

That makes sense now you have explained how they work. I plan to run the car until next summer when I will start the timing chain work. Do you think if I replaced these parts now, it would improve the -7.00Kw timing and bring the camshaft inlet and exhaust phase positions a little closer to zero if they may have become a little lazy?

 

My car is now on day four at the repair shop. Apparently, there were some gaskets they needed to order that were not on the original parts list. Depending on when the order arrives I will pick it up today or Monday. The shop provided me with a very nice BMW X1 as a loaner so I can’t complain.

 

Which gaskets were needed?

 

My bill for the timing chains replacement was a little higher than quoted. Most people would spend this amount of money for a whole car. Given a replacement would be much more expensive I’ve convinced myself it was worth it. The car is working great so far.

Below is a copy of the receipt. I can’t remember how to post a pdf file.

 

Nice to hear that the job is finished and the car drives perfect!
The parts:
07L109083H Camshaft Adjuster Unit
07L109084G Camshaft Adjuster Unit
07K109283F Timing Cover
07K109224 Gear Wheel Shaft
were not needed... in my opinion of course! Also, since they have changed the "gear wheel shaft" why not the "gear" as well...

 

All good questions and I will see if I can get some answers. Thanks for going through the long list of parts.

 

Any time!

 

Yes, both need to be replaced at the same time.

 

Part for the other chain (07K109158C) is not on your invoice that I can see ?